Combination switch and burglar alarm



oct'. 30,1923.

F. L. KRIZNAR COMBINATION SWITCH AND BURGLAR ALARM Filed aan. 19, 1920 Patented Oct. 30, 1923.

UNITED STATES FRANK L. KRIZNAR, OF DENVER, COLORADO.

COMBINATION SWITCH 4.AND BURGLAR ALARM.

Application led January 19, 1920. Serial No. 352,365.

To all whom it may concern.'

Be it known that I, FRANK L. KRIZNAR, a citizen of no country, an'd a resident of the city and county of Denver, and State of Colorado, have invented certain new and useful Improvements in a Combination Switch and Burglar Alarm, of which the following is a full, clear, -and exact description, such as will enable others skilled in the art to which the invention appertains to make and use the same.

My invention relates to an improvement in a combined switch and burglar alarm especially designed for use upon a motor vehicle, and by means of which the lighting, ignition and alarm system is controlled.

Another object of the invention is to provide a combined switch andy burglar alarm adapted to be actuated by the movement of the clutch pedal of the motor for closing the circuit of the burglar alarm and causing the ringing of a bell, or sounding of a horn, or Aother signal.

Another object of my invention is to provide a relatively simple, convenient, and efficient combined switch and alarm for use upon a motor vehicle adapted to control the ignition, lighting and alarm system.

Another object ofthe invention is to provide means for actuating an alarm whenever the clutch pedal is moved for disengaging the clutch.

With these and other objects in view, the invention will now be described in detail with reference to the accompanying drawing which forms a part hereof.

In this drawing, Figure 1 is a view illustrating the application ofthe invention to a motor vehicle; Fig. 2 is a top view of the switch with the cover of the housing removed; Fig. 3 is a vertical sectional view taken on the line 3--3 of Figure 2; and Figure 4 is a fragmental view in section illustrating the switch for controlling the alarm circuit.

Corresponding and like parts are referred to in the following description and indicated in all the views of the accompanying drawing by the same reference characters.

Let the numeral 5 designate a fragment of an automobile body, and the numeral 6 a fragment of the motor. 7 represents the usual clutch pedal which is positioned for convenient operation by the driver. 8 represents a housing in which the mechanism controlling the various circuits is located.

This housing is preferably attached underneath the floor boards of the body 5 of the an insulating disc 16 within the housing 8 and a spiral spring 17 surrounds the' shaft 14 within the housing 8 and exerts tension upon the disc 16 so that the shaft 12 is maintained in position. The tube 9 is coupled t the'cover 15 ofthe housing 8 by meansof a coupling nut 18. The upper extremity of the lshaft 12 is provided with a groove 19 therein which receives a tongue 20 of a shaft 21. This shaft 2l is operatively connected with the lock l0 at its upper extremity, and the shaft 12 is rotated through the medium of the shaft 21 by the manipulation of the key in the lock l0.` The bottom of the housing 8 is provided with insulating material 22 therein, upon which the various contact points of the different circuits are mounted. The insulation 16 carries two metallic arms v23 and 24; thesaid arms being insulated from the shaft 12 by means of the insulating disc 16. This insulating disc 16 also carries two additional arms 25 and 26, similarly insulated from the shaft 12. By rotation of the shaft 12 these arms 23 and 24 may be brought into Contact with the various contact points 27, es, 29, 3o, ai, and 32.-

In connection with the construction heretofore described, it is well that the battery circuit should now be described. This circuit leads from one pole of a battery 33 through a conductor 34 to a binding post 35 mounted upon a Contact 36 within the housing 8; and thence through the switch arms 23, 24, 25, and 26 to any element connected to be influenced by the electricity and thence back to the battery 33. The conductor 34 passes into the housing 8 through an opening which is insulated by a plug 37. It is understood that a conductor leadsA from each vof the contacts 27, 28, 29, 30, 31, and 32 to the battery 33. These conductors, for the purpose of convenience in describing, are all designated by the reference los . one end of which is connected with the disc 42 through the medium of a pin 4-4, and the other end thereof rests against the housing'` as shown at 45. The pin 44 extends through the disc 42 and said pin is adapted to be engaged on the opposite side from the spring 43 by means of a pin 46, which is mounted' upon the shaft 40. An arm 47, is made fast to one extremity of the shaft 40 on the exterior of the housing 8, as shown at 48, and the roller 49 is journaled upon 'the outer extremity of the arm 47 at right angles to the latter. The clutch pedal 7 is adapted to engage against this roller 49, as shown in Figure 1, and when the said clutch pedal 7 is pressed inwardly to disengage the clutch, the arm 47 is actuated thereby for the purpose of rotating the shaft 40. The rotation of this shaft 40 by the inward movement of the clutch edal, causes the pin 46 to engage with the pin 44, and thereby causes the disc 42 to rotate in an anti-clockwise direction in Figure 4. By reason of the fact that the Spiral spring 43 is fixed at one extremity to the pin 44, this spring is placed under tension by the rotation of the disc 42, and as a consequence when the clutch pedal 7 is released, the tension of the spiral spring 43 will act to cause the disc 42 to rotate back to its normal position. This disc 42 is provided With a metallic strip 50 on a segment of its periphery through which the circuit of an alarm 51a is adapted to be closed. Now, assume that the switch arms 23, and 24 are in position as shown in Fig. 2. In such position said switch arms are engaging dead contacts 31 and 32. It is, however, understood that these contacts may be employed for the connection of live wires therewith leadin to any element, or instrumentality. As a l of the switch arms are mounted upon the insulating disc 16 they maintain their relative positions to each other and as a consequence the contact arms 25 and 26 would occupy the position as shown in Figure 2. The arm 25 normally engages the insulating material of the disc 42, but when the arm 47 is actuated by the clutch pedal 7 in the manner heretofore described. the disc 42 is rotated so as to bring the metallic strip 50 into contact with the arm 25, thereby closing the alarm circuit through the switch arm 25, metallic strip 50, and a Contact arm 51. This alarm circuit may be traced as follows: from the battery 33 through conductor 34, contact 36, and the contact arm 5l, switch arm 25, metallic strip 50, a switch arm 52, and the conductor 5L to the alarm 51a, and thence through a conductor 53 to the other pole of the battery 33. The conductor 52 leads through a metallic strip 54, which is secured upon the insulating material 22 in 'the housing 8. The metallic strip 54 does not form a contact, but is only employed be cause of its having more durability than an ordinary wire. The contact arm 51 of the contact 36 is constantly in the circuit ol thc switch arms 23, 24, 25, and 26, by reason oi the fact that these arms lead oli' of a solid piece of metal on the bottom ot the insulating disk 16.

From the foregoing explanation it will be seen that when the clutch pedal 7 is actuated so as to enable the gears of the automobile to be shifted for the purpose ot starting the automobile, the circuit through the alarm 51a will be closed and consequently a signal will be given of an attempted theft of the automobile. When the switch arms are in the position shown in Figure 2, all of the lights of the car are off, as well as the ignition, and the mechanism is set for closing thc circuit of theI alarm instantly thc clutch pedal is moved inwardly.

Now, assuming that the owner or authorized person desires to use thc machine. the shaft 12 is given a slight rotation in the direction of the arrow in Figure 2. wherehv the arms 25 and 26 are brought to such position that the disc 42 will rotate between thc arms 25 and 26, wit-hout engaging the latter. Consequently the alarm circuit cannot hc closed.

Now, assuming that it is desired to ect thc burglar alarm mechanism with thc circuit closed through the dim lights ot the automobile, The shaft 12 will be rotated so as to bring the switch arm 23 into engagement with the contact 30,`the contact 2h), being located in the circuit of the dim lights. This movement, or rotation of the shaft l2 will simultaneously bring the switch arm, 26 into engagement with the periphery of the disc 42, thereby placing the circuit of thc alarm 51'in condition to be closed when thc disc 42 is rotated in the manner heretofore described.

Now, when the automobile is being used by an authorized person at such time that lights are not required, the shaft 12 will be rotated so as to bring the contact arms 23 and 24into engagement with the contacts 28 and 29, which said contacts are both located in the ignition circuit.

Wit-hout breaking the ignition circuit. the shaft 12 may be rotated to cause the switch arm 23 to engage with the Contact 27, which is located in the circuit of the blight lights.

In a similar manner, if it is desired to usethedim lights without breaking the igni- `nition circuit, the shaft '12 will be rotated From the foregoing description it is be-` lieved that the use` and operation of the invention will be full understood, and need not `be further descri d.

While I have described and illustra-ted herein a specific form of my invention, it is understood that I am not limited thereto and that the same may -be modified and varied without departing from the invention or the scope of the appended claims.

Having thus described myA invention, what I claim and desire to secure by Letters Patent is 1. The 'combination with a rotating multiple contact switch of an auxiliary circuit closer comprising, a shaft positioned at right angles to the axis of said switch; an insulating disk carrying a 'contact making plate, mounted on said shaft, said plate making contact with fingers on said muil;- tiple contact switch at4 predetermined positions thereof, said shaft being operable independent of said switch.

2. The'combination with a rotating multiple contact switch having contact arms, of a shaft` positioned at right angles to the axis of said switch; an insulating disk, carrying a contact plate which engages certain of said contact arms at predetermined positions of `said rotating switch, mounted on said shaft;

a stationary contact arm constantly in engagement with said plate and means for rotating said shaft independent of said switch,

3. The combination with a rotating multiple contact switch and lock of an automobileand the clutch pedal of said` automobile, of an auxiliary contact maker, acting in conjunction With said switch, comprising a shaft itioned at right angles to the axis of sai switch; an insulating disk, carryin a contact making plate, mounted on sai shaft; and a lever arm secured to said shaft,

L'said lever arm contacting with said clutch pedal and transmitting any movement there-v of'to cause said plate to contact with certain of the contact arms of said multiple contact yswitch at predetermined positions thereof.

4. The combination with a'notating multiple contact switch, of a housing for said switch; a shaft mounted in said housing, at right angles to the axis of said switch and in spaced relation thereto; an insulatin disk loosely mounted on said shaft an carrying a contact plate, one extremity of' said contact plate beingsunk below the general surface of said disk to form a. ratchet tooth; contact arms on said switch `and said housing adaptedto Contact with said plate when said disk is revolved in one direction and to engage said tooth and' prevent the revolution of the disk in the opposite direction; an obstruction on said shaft engaging an'obstruction on said disk so as to cause said disk to revolve when said shaft is moved` in one' direct-ion; a spring secured in said housin at its one extremityy and to said disk 'at its other extremity so as to ret'urn said disk to its former position when said Contact arms are removed from contact with said plate and a lever' mounted on said shaft on'the exterior of said housing. v

In testimony whereof, I aiix myy signature.

FRANK L. KRIZNAR. 

